The protein encoded by this gene is a zinc finger transcription factor that binds to GC-rich motifs of many promoters. The encoded protein is involved in many cellular processes, including cell differentiation, cell growth, apoptosis, immune responses, response to DNA damage, and chromatin remodeling. Post-translational modifications such as phosphorylation, acetylation, glycosylation, and proteolytic processing significantly affect the activity of this protein, which can be an activator or a repressor. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2014]

Expression

Ubiquitous expression in skin (RPKM 18.2), endometrium (RPKM 16.6) and 25 other tissues See more

YB-1 and Sp1 exert negative effects on each other's function in enhancing transcription from the HIV-1 promoter, suggesting an interplay between these two proteins during regulation of HIV-1 Tat function

The tumor suppressor protein p53 inhibits HIV-1 Tat-mediated transactivation of the HIV-1 LTR promoter through an interaction with the Sp1 sites in the LTR, suggesting an inhibition of Sp1 effects on Tat function

HIV-1 Tat amino acids 30-55 mediate binding of Tat to Sp1, an effect that some reports indicate is a direct binding interaction, while other reports suggest it is indirect and possibly mediated through interaction with other cellular factors

HIV-1 Vpr activates promoter activity of p21/Cip1/Waf1 through the GC-rich region located between nucleotides -84 and -74 in a manner that requires cooperativity of Sp1, which binds to the DNA sequence spanning -84 to -74

Results from GST pull-down assays show the association of Vpr with p53 in extracts containing Sp1, suggesting the physical interaction of Vpr with Sp1 and p53 could modulate transcriptional activity of p21

AGE/RAGE pathway, organism-specific biosystemAdvanced glycation end products (AGEs) are heterogeneous group of non-enzymatic malliard reaction products of aldose sugar with proteins and lipids. Formation of AGEs is an indicator of one of the ma...

Adipogenesis, organism-specific biosystemThe different classess of factors involved in adipogenesis are shown. Adipogenesis is the process by which fat cells differentiate from predadipocytes to adipocytes (fat cells). Adipose tissue, compo...

Androgen receptor signaling pathway, organism-specific biosystemAndrogens, mainly testosterone and 5alpha-dihydrotestosterone (DHT) play significant role in the growth and development of the male reproductive organs. These steroid hormones bring about their biolo...

Breast cancer, organism-specific biosystemBreast cancer is the leading cause of cancer death among women worldwide. The vast majority of breast cancers are carcinomas that originate from cells lining the milk-forming ducts of the mammary gla...

Breast cancer, conserved biosystemBreast cancer is the leading cause of cancer death among women worldwide. The vast majority of breast cancers are carcinomas that originate from cells lining the milk-forming ducts of the mammary gla...

Cellular responses to stress, organism-specific biosystemCells are subject to external molecular and physical stresses such as foreign molecules that perturb metabolic or signaling processes, and changes in temperature or pH. The ability of cells and tissu...

Choline metabolism in cancer, organism-specific biosystemAbnormal choline metabolism is emerging as a metabolic hallmark that is associated with oncogenesis and tumour progression. Following transformation, oncogenic signalling via pathways such as the RAS...

Choline metabolism in cancer, conserved biosystemAbnormal choline metabolism is emerging as a metabolic hallmark that is associated with oncogenesis and tumour progression. Following transformation, oncogenic signalling via pathways such as the RAS...

Constitutive Androstane Receptor Pathway, organism-specific biosystemThe Constitutive Androstane Receptor (CAR) is a nuclear receptor and functions as a sensor for xenobiotics. It regulates transcription of genes encoding proteins in metabolism and excretion of xenobi...

Copper homeostasis, organism-specific biosystemCopper is a redox-active transition metal and an essential trace element for life. It is a catalytic cofactor for numerous enzymes involved in critical biological processes (eg. detoxyfication by oxy...

Corticotropin-releasing hormone signaling pathway, organism-specific biosystemCorticotropin-releasing hormone (CRH) is a neuropeptide secreted abundantly in the paraventricular nucleus of the hypothalamus, amygdala, cerebral cortex and cerebellum in the central nervous system ...

EGF/EGFR Signaling Pathway, organism-specific biosystemEpidermal growth factor receptor (EGFR) also known as ErbB1/HER1 is a member of the ErbB family of receptor tyrosine kinases which also includes ErbB2 (Neu, HER2), ErbB3 (HER3) and ErbB4 (HER4). Sev...

Estrogen Receptor Pathway, organism-specific biosystemThe estrogen receptor is a nuclear receptor that is activated upon ligand binding and subsequently translocates to the nuclear. There, it activates transcription of target genes involved in essentia...

Estrogen signaling pathway, organism-specific biosystemEstrogen receptor refers to a group of receptors which are activated by the hormone 17-beta-estradiol (estrogen). Two types of estrogen receptor exist: ER which is a member of the nuclear hormone fam...

Fatty acid, triacylglycerol, and ketone body metabolism, organism-specific biosystemThe reactions involved in the metabolism of fatty acids and of the triacylglycerols and ketone bodies derived from them form a closely interrelated, coordinately regulated module that plays a central...

Gene Expression, organism-specific biosystemGene Expression covers the pathways by which genomic DNA is transcribed to yield RNA, the regulation of these transcription processes, and the pathways by which newly-made RNA Transcripts are process...

Generic Transcription Pathway, organism-specific biosystemOVERVIEW OF TRANSCRIPTION REGULATION: Detailed studies of gene transcription regulation in a wide variety of eukaryotic systems has revealed the general principles and mechanisms by which cell- or t...

IL17 signaling pathway, organism-specific biosystemInterleukin 17 is a family of cytokines that acts as potent mediators in delayed-type reactions by increasing chemokine production in various tissues to recruit monocytes and neutrophils to the site ...

Initiation of transcription and translation elongation at the HIV-1 LTR, organism-specific biosystemFollowing cellular activation or drug treatment, NFAT and NF-kB translocate to the nucleus and bind sites at the HIV-1 LTR. NFAT and NF-kB recruit p300/CBP to the LTR, resulting in acetylation of his...

Integrated Breast Cancer Pathway, organism-specific biosystemThis pathway incorporates the most important proteins for Breast Cancer. The Rp score from the Connectivity-Maps (C-Maps) webserver was used to determine the rank of the most important proteins in Br...

Leptin signaling pathway, organism-specific biosystemLeptin is a peptide hormone mainly synthesised and secreted from adipocytes. It is also expressed in other tissues including placenta, stomach and skeletal muscle. Leptin mediates its effects by bind...

MECP2 and Associated Rett Syndrome, organism-specific biosystemMecp2 is in many mammals an important regulator of neuronal function and development. It affects all cell types, especially neurons but also astrocytes, oligodendrocytes, and glial cells. Mecp2 plays...

Metabolism, organism-specific biosystemMetabolic processes in human cells generate energy through the oxidation of molecules consumed in the diet and mediate the synthesis of diverse essential molecules not taken in the diet as well as th...

Metabolism of lipids and lipoproteins, organism-specific biosystemLipids are hydrophobic but otherwise chemically diverse molecules that play a wide variety of roles in human biology. They include ketone bodies, fatty acids, triacylglycerols, phospholipids and sphi...

Mitophagy - animal, organism-specific biosystemMitochondria act as the energy powerhouse of the cell, and are essential for eukaryotic cells to grow and function normally. However, deleterious byproducts of oxidative phosphorylation process calle...

Mitophagy - animal, conserved biosystemMitochondria act as the energy powerhouse of the cell, and are essential for eukaryotic cells to grow and function normally. However, deleterious byproducts of oxidative phosphorylation process calle...

Oncogene Induced Senescence, organism-specific biosystemOncogene-induced senescence is triggered by high level of RAS/RAF/MAPK signaling that can be caused, for example, by oncogenic mutations in RAS or RAF proteins, or by oncogenic mutations in growth fa...

Oxidative Stress, organism-specific biosystemOxidative stress represents an imbalance between the production and manifestation of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates or to rep...

PPARA activates gene expression, organism-specific biosystemThe set of genes regulated by PPAR-alpha is not fully known in humans, however many examples have been found in mice. Genes directly activated by PPAR-alpha contain peroxisome proliferator receptor e...

Regulation of lipid metabolism by Peroxisome proliferator-activated receptor alpha (PPARalpha), organism-specific biosystemPeroxisome proliferator-activated receptor alpha (PPAR-alpha) is the major regulator of fatty acid oxidation in the liver. PPARalpha is also the target of fibrate drugs used to treat abnormal plasma ...

Selenium Metabolism and Selenoproteins, organism-specific biosystem* Comments belonging to specific genes on the Selenoprotein pathway ** TRXND3 gene: Although the geneID is correct, the sequence of this gene was guessed by analogy. ** Cystathionine gamma-lyase is t...

Signal Transduction, organism-specific biosystemSignal transduction is a process in which extracellular signals elicit changes in cell state and activity. Transmembrane receptors sense changes in the cellular environment by binding ligands, such a...

Signaling by TGF-beta Receptor Complex, organism-specific biosystemThe TGF-beta/BMP pathway incorporates several signaling pathways that share most, but not all, components of a central signal transduction engine. The general signaling scheme is rather simple: upon ...

Sudden Infant Death Syndrome (SIDS) Susceptibility Pathways, organism-specific biosystemIn this model, we provide an integrated view of Sudden Infant Death Syndrome (SIDS) at the level of implicated tissues, signaling networks and genetics. The purpose of this model is to serve as an ov...

Transcriptional activity of SMAD2/SMAD3:SMAD4 heterotrimer, organism-specific biosystemIn the nucleus, SMAD2/3:SMAD4 heterotrimer complex acts as a transcriptional regulator. The activity of SMAD2/3 complex is regulated both positively and negatively by association with other transcrip...

These reference sequences are curated independently of the genome
annotation cycle, so their versions may not match the RefSeq versions in the current
genome build. Identify version mismatches by comparing the version of the RefSeq in
this section to the one reported in Genomic regions,
transcripts, and products above.

mRNA and Protein(s)

Transcript Variant: This variant (3) uses an alternate in-frame splice junction at the 5' end of an exon compared to variant 1. The resulting isoform (c) has the same N- and C-termini but is shorter compared to isoform a.

The following sections contain reference sequences that belong to a
specific genome build. Explain

This section includes genomic Reference
Sequences (RefSeqs) from all assemblies on which this gene is annotated, such as
RefSeqs for chromosomes and scaffolds (contigs) from both reference and alternate
assemblies. Model RNAs and proteins are also reported here.